<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avator_box">
        <img src="@/assets/images/logo.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        :model="loginForm"
        :rules="rules"
        ref="loginFormRef"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            type="password"
            prefix-icon="iconfont icon-3702mima"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" :plain="true" @click="submitForm">登录</el-button>
          <el-button type="info" @click="resetForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
    <vue-particles
      class="particles"
      color="#dedede"
      :particleOpacity="0.8"
      :particlesNumber="80"
      shapeType="circle"
      :particleSize="4"
      linesColor="#dedede"
      :linesWidth="1"
      :lineLinked="true"
      :lineOpacity="0.6"
      :linesDistance="150"
      :moveSpeed="3"
      :hoverEffect="true"
      hoverMode="grab"
      :clickEffect="true"
      clickMode="push"
    >
    </vue-particles>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      rules: {
        username: [
          { required: true, message: '请输入活用户名称', trigger: 'blur' },
          { min: 3, max: 8, message: '长度在 3 到 8 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入活用户密码', trigger: 'blur' },
          { min: 6, max: 16, message: '长度在 6 到 16 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    submitForm() {
      this.$refs.loginFormRef.validate(async valid => {
        if (valid) {
          const { data: res } = await this.$http.post('login', this.loginForm)
          if (res.meta.status !== 200) {
            return this.$message.error('登录失败')
          }
          this.$message.success('登录成功')
          // 登录成功保存 token
          window.sessionStorage.setItem('token', res.data.token)
          this.$router.push('/home')
        } else {
          this.$message.warning('提交失败，请检查用户信息')
          return false
        }
      })
    },
    // 重置表单
    resetForm() {
      this.$refs.loginFormRef.resetFields()
    }
  }
}
</script>

<style lang="less" scope>
.login_container {
  // background: url(./img/sourc  e.gif);
  // background-color: #11121a;
  height: 100%;
  overflow: hidden;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  .avator_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.particles {
  height: 100%;
  background-color: #11121a;
}
</style>
